var CreatedOKLodop7766 = null;

export function needCLodop() {
  try {
    var ua = navigator.userAgent
    if (ua.match(/Windows\sPhone/i) != null) return true
    if (ua.match(/iPhone|iPod/i) != null) return true
    if (ua.match(/Android/i) != null) return true
    if (ua.match(/Edge\D?\d+/i) != null) return true

    var verTrident = ua.match(/Trident\D?\d+/i)
    var verIE = ua.match(/MSIE\D?\d+/i)
    var verOPR = ua.match(/OPR\D?\d+/i)
    var verFF = ua.match(/Firefox\D?\d+/i)
    var x64 = ua.match(/x64/i)
    if (verTrident == null && verIE == null && x64 !== null) return true
    else if (verFF !== null) {
      verFF = verFF[0].match(/\d+/)
      if (verFF[0] >= 41 || x64 !== null) return true
    } else if (verOPR !== null) {
      verOPR = verOPR[0].match(/\d+/)
      if (verOPR[0] >= 32) return true
    } else if (verTrident == null && verIE == null) {
      var verChrome = ua.match(/Chrome\D?\d+/i)
      if (verChrome !== null) {
        verChrome = verChrome[0].match(/\d+/)
        if (verChrome[0] >= 41) return true
      }
    }
    return false
  } catch (err) {
    return true
  }
}

//====页面引用CLodop云打印必须的JS文件：====
if (needCLodop()) {
  var head =
      document.head ||
      document.getElementsByTagName('head')[0] ||
      document.documentElement
  var oscript = document.createElement('script')
  oscript.src = 'http://localhost:8000/CLodopfuncs.js?priority=1'
  head.insertBefore(oscript, head.firstChild)

  //引用双端口(8000和18000）避免其中某个被占用：
  oscript = document.createElement('script')
  oscript.src = 'http://localhost:18000/CLodopfuncs.js?priority=0'
  head.insertBefore(oscript, head.firstChild)
}

//====获取LODOP对象的主过程：====
export function getLodop(oOBJECT, oEMBED) {
  var strHtmInstall =
      "<br><font color='#333'>打印控件未安装!点击这里<a style='color:red' href='install_lodop32.exe' target='_self'>执行安装</a>,安装后请刷新页面或重新进入。</font>"
  var strHtmUpdate =
      "<br><font color='#333'>打印控件需要升级!点击这里<a style='color:red' href='install_lodop32.exe' target='_self'>执行升级</a>,升级后请重新进入。</font>"
  var strHtm64_Install =
      "<br><font color='#333'>打印控件未安装!点击这里<a style='color:red' href='install_lodop64.exe' target='_self'>执行安装</a>,安装后请刷新页面或重新进入。</font>"
  var strHtm64_Update =
      "<br><font color='#333'>打印控件需要升级!点击这里<a style='color:red' href='install_lodop64.exe' target='_self'>执行升级</a>,升级后请重新进入。</font>"
  var strHtmFireFox =
      "<br><br><font color='#333'>（注意：如曾安装过Lodop旧版附件npActiveXPLugin,请在【工具】->【附加组件】->【扩展】中先卸它）</font>"
  var strHtmChrome =
      "<br><br><font color='#333'>(如果此前正常，仅因浏览器升级或重安装而出问题，需重新执行以上安装）</font>"
  var strCLodopInstall =
      "<br><font color='#333'>CLodop云打印服务(localhost本地)未安装启动!点击这里<a style='color:red' href='http://www.lodop.net/download/CLodop_Setup_for_Win32NT_https_3.046Extend.zip' download target='_self'>执行安装</a>,安装后请刷新页面。</font>"
  var strCLodopUpdate =
      "<br><font color='#333'>CLodop云打印服务需升级!点击这里<a style='color:red' href='http://www.lodop.net/download/CLodop_Setup_for_Win32NT_https_3.046Extend.zip' download target='_self'>执行升级</a>,升级后请刷新页面。</font>"
  var LODOP
  try {
    var isIE =
        navigator.userAgent.indexOf('MSIE') >= 0 ||
        navigator.userAgent.indexOf('Trident') >= 0
    if (needCLodop()) {
      try {
        LODOP = getCLodop()
      } catch (err) {}
      if (!LODOP && document.readyState !== 'complete') {
        alert('C-Lodop没准备好，请稍后再试！')
        return
      }
      if (!LODOP) {
        if (isIE) document.write(strCLodopInstall)
        else
          document.getElementById("printMsg").innerHTML =
              strCLodopInstall + document.getElementById("printMsg").innerHTML
        return
      } else {
        if (CLODOP.CVERSION < '3.0.4.3') {
          if (isIE) document.write(strCLodopUpdate)
          else
            document.getElementById("printMsg").innerHTML =
                strCLodopUpdate + document.getElementById("printMsg").innerHTML
        }
        if (oEMBED && oEMBED.parentNode)
          oEMBED.parentNode.removeChild(oEMBED)
        if (oOBJECT && oOBJECT.parentNode)
          oOBJECT.parentNode.removeChild(oOBJECT)
      }
    } else {
      var is64IE = isIE && navigator.userAgent.indexOf('x64') >= 0
      //=====如果页面有Lodop就直接使用，没有则新建:==========
      if (oOBJECT != undefined || oEMBED != undefined) {
        if (isIE) LODOP = oOBJECT
        else LODOP = oEMBED
      } else if (CreatedOKLodop7766 == null) {
        LODOP = document.createElement('object')
        LODOP.setAttribute('width', 0)
        LODOP.setAttribute('height', 0)
        LODOP.setAttribute(
            'style',
            'position:absolute;left:0px;top:-100px;width:0px;height:0px;',
        )
        if (isIE)
          LODOP.setAttribute(
              'classid',
              'clsid:2105C259-1E0C-4534-8141-A753534CB4CA',
          )
        else LODOP.setAttribute('type', 'application/x-print-lodop')
        document.documentElement.appendChild(LODOP)
        CreatedOKLodop7766 = LODOP
      } else LODOP = CreatedOKLodop7766
      //=====Lodop插件未安装时提示下载地址:==========
      if (LODOP == null || typeof LODOP.VERSION == 'undefined') {
        if (navigator.userAgent.indexOf('Chrome') >= 0)
          document.getElementById("printMsg").innerHTML =
              strHtmChrome + document.getElementById("printMsg").innerHTML
        if (navigator.userAgent.indexOf('Firefox') >= 0)
          document.getElementById("printMsg").innerHTML =
              strHtmFireFox + document.getElementById("printMsg").innerHTML
        if (is64IE) document.write(strHtm64_Install)
        else if (isIE) document.write(strHtmInstall)
        else
          document.getElementById("printMsg").innerHTML =
              strHtmInstall + document.getElementById("printMsg").innerHTML
        return LODOP
      }
    }
    if (LODOP.VERSION < '6.2.2.3') {
      if (!needCLodop()) {
        if (is64IE) document.write(strHtm64_Update)
        else if (isIE) document.write(strHtmUpdate)
        else
          document.getElementById("printMsg").innerHTML =
              strHtmUpdate + document.getElementById("printMsg").innerHTML
      }
      return LODOP
    }
    //===如下空白位置适合调用统一功能(如注册语句、语言选择等):===

    //===========================================================
    return LODOP
  } catch (err) {
    alert('getLodop出错:' + err)
  }
}
